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DE-202026101536-U1 - Lifting device for raising a road vehicle trailer

DE202026101536U1DE 202026101536 U1DE202026101536 U1DE 202026101536U1DE-202026101536-U1

Abstract

Lifting device (1) for lifting a road vehicle trailer (20) comprising • a stationary basic framework (2) comprising a first upright (3), a second upright (4) and a drive unit, wherein the two uprights (3, 4) extend along a lifting direction (5) and are spaced apart from each other in a longitudinal direction (6) running transversely to the lifting direction (5), wherein the lifting direction (5) and the longitudinal direction (6) define a scaffold plane (7) dividing the lifting device (1) into a working side and a non-working side, wherein a working direction (14) extends on the working side normal to the scaffold plane (7), • a first (8) and a second lifting element (9) movable by means of the drive unit, wherein the first lifting element (8) is slidably connected to the first upright (3) in the lifting direction (5) and the second lifting element (9) is slidably connected to the second upright (4) in the lifting direction (5) in order to position the lifting elements (8, 9) by means of the drive unit along the lifting direction (5), • and a first support arm (10) and a second support arm (11), each support arm (10, 11) comprising a fastening section (12) and a support section (13), wherein the fastening section (12) of the first support arm (10) is preferably detachably connected to the first lifting element (8) and the fastening section (12) of the second support arm (11) is preferably detachably connected to the second lifting element (9) is connected to position the support arms (10, 11) by means of the lifting elements (8, 9) in the lifting direction (5), wherein at least the support sections (13) of the support arms (10, 11) can be brought into a working position for receiving the road vehicle trailer, in which working position the support sections (13) are arranged on the working side and are aligned such that an imaginary longitudinal axis of the support sections (13) has a directional component, which directional component is aligned parallel to the working direction (14) and is oriented in the working direction (14).

Assignees

  • GSCHAIDER THOMAS

Dates

Publication Date
20260513
Application Date
20260319
Priority Date
20250319

Claims (17)

  1. Lifting device (1) for lifting a road vehicle trailer (20) comprising: • a stationary base frame (2) comprising a first upright (3), a second upright (4), and a drive unit, the two uprights (3, 4) extending along a lifting direction (5) and spaced apart from each other in a longitudinal direction (6) transverse to the lifting direction (5), the lifting direction (5) and the longitudinal direction (6) defining a frame plane (7) dividing the lifting device (1) into a working side and a non-working side, a working direction (14) extending on the working side perpendicular to the frame plane (7), • a first (8) and a second lifting element (9) movable by means of the drive unit, the first lifting element (8) being slidably connected to the first upright (3) in the lifting direction (5), and the second lifting element (9) being slidably connected to the second upright (4) in the lifting direction (5). is to position the lifting elements (8, 9) by means of the drive unit along the lifting direction (5), • and a first support arm (10) and a second support arm (11), each of which support arms (10, 11) comprises a mounting section (12) and a support section (13), wherein the mounting section (12) of the first support arm (10) is preferably detachably connected to the first lifting element (8) and the mounting section (12) of the second support arm (11) is preferably detachably connected to the second lifting element (9) to position the support arms (10, 11) by means of the lifting elements (8, 9) in the lifting direction (5), wherein at least the support sections (13) of the support arms (10, 11) can be brought into a working position for receiving the road vehicle trailer, in which working position the support sections (13) are arranged on the working side and are oriented such that an imaginary longitudinal axis of the support sections (13) has a directional component which is aligned parallel to the working direction (14) and oriented in the working direction (14).
  2. Lifting device (1) according to Claim 1 , characterized in that the fastening section (12) of at least one of the support arms (10, 11) is slidably connected to the respective lifting element (8, 9) in the longitudinal direction (6) in order to be able to adjust the distance between the support sections (13) of the support arms (10, 11).
  3. Lifting device (1) according to one of the Claims 1 or 2 , characterized in that the lifting elements (8,9) each comprise a lifting sleeve (8a, 9a) aligned parallel to the lifting direction (5) and a transverse sleeve (8b, 9b) aligned transversely to the lifting direction (5), preferably parallel to the longitudinal direction (6), wherein the lifting elements (8,9) are connected to the respective upright (3,4) by means of the lifting sleeves (8a,9a) and the fastening sections (12) of the support arms (10,11) are each connected to one of the transverse sleeves (8b,9b).
  4. Lifting device (1) according to Claim 3 , characterized in that both transverse sleeves (8b,9b) are attached to the lifting sleeves (8a,9a) on the working side of the lifting device (1).
  5. Lifting device (1) according to one of the Claims 1 until 4 , characterized in that the fastening section (12) and the support section (13) of at least one of the support arms (10, 11) are pivotably connected to each other about a first joint (15) whose axis is aligned parallel to the scaffold plane (7).
  6. Lifting device (1) according to one of the Claims 1 until 5 , characterized in that the support section (13) of at least one of the support arms (10, 11) comprises a first subsection (13a) and a second subsection (13b), wherein the first subsection (13a) and the second subsection (13b) are pivotably connected to each other by means of a second joint (16) whose axis is aligned parallel to the scaffold plane (7).
  7. Lifting device (1) according to Claim 5 or 6 , characterized in that the first joint (15) and/or the second joint (16) is designed as a double joint.
  8. Lifting device (1) according to one of the Claims 5 until 7 , characterized in that the first joint (15) and/or the second joint (16) is designed to be lockable, preferably in any angular position.
  9. Lifting device (1) according to one of the Claims 5 until 8 , characterized in that the axis of the first joint (15) and/or the axis of the second joint (16) is aligned parallel to the lifting direction (5).
  10. Lifting device (1) according to one of the preceding claims, characterized in that the first support arm (10) and the second support arm (11) are identical in construction and/or are connected to the lifting elements (8, 9) in an identical manner.
  11. Lifting device (1) according to one of the preceding claims, characterized in that the imaginary longitudinal axes of the support sections (13) of the support arms (10,11) are aligned parallel to a working plane at least in the working position, which working plane is spanned by the working direction (14) and the longitudinal direction (6).
  12. Lifting device (1) according to one of the preceding claims, characterized in that the lifting device (1) further comprises an additional arm (17), wherein the additional arm (17) is detachably attached to the fastening section (12) of at least one of the support arms (10, 11) and/or to at least one of the lifting elements (8, 9).
  13. Lifting device (1) according to one of the preceding claims, characterized in that at least one of the support arms (10, 11) is detachably attached to the support section (13), and preferably at least one, preferably height-adjustable, retaining element (18) for supporting the road vehicle trailer is detachably attached to the additional arm (17).
  14. Lifting device (1) according to Claim 13 , characterized in that at least two retaining elements (18) are provided, which retaining elements (18) are connected in pairs to a beam, preferably covered with rubber.
  15. Lifting device (1) according to Claim 13 , characterized in that at least one retaining element (18) designed as a ball head (19) is provided.
  16. Lifting device (1) according to one of the preceding claims, characterized in that the uprights (3, 4) are lifting columns of a conventional lifting platform, preferably a vehicle lifting platform.
  17. System comprising a lifting device (1) according to one of the preceding claims and a road vehicle trailer (20), whereby the road vehicle trailer (20) can be inserted into the lifting device (1) in a first position of the lifting device (1), whereby the support sections (13) of the support arms (10, 11) are either already in the working position in the first position or can be brought into the working position in a second position, so that the support sections (13) of the support arms (13) engage the road vehicle trailer (20) at least section by section in the lifting direction (8) in order to raise and/or lower the road vehicle trailer (20) by means of the lifting elements (8, 9) via the support arms (10, 11).

Description

AREA OF INVENTION The invention relates to a lifting device for lifting a road vehicle trailer. A road vehicle is usually, but not exclusively, understood to be a multi-track, in particular two-track, motor vehicle, and accordingly, a road vehicle trailer is understood to be a trailer intended for joint operation with the motor vehicle as a towing vehicle, i.e., a motor vehicle trailer. STATE OF THE ART To carry out maintenance or repair work on road vehicle trailers, hereinafter also referred to simply as trailers, especially when the axles, wheels, or undercarriage are affected, it is necessary to lift the trailers. This is done both to relieve the load on the axles and wheels and to make areas that are otherwise difficult or impossible to access accessible to a mechanic. Lifting devices for raising road vehicles, such as conventional lifting platforms, are generally known in the automotive industry. However, such lifting devices are designed for motor vehicles, and their use for raising trailers is often only possible with extensive assistance or not at all, due to significant structural differences between trailers and motor vehicles. Furthermore, the use of such aids, such as jacking devices, often represents an improper use of conventional lifting devices and can therefore be problematic or even prohibited by law, for example, from an insurance and/or occupational safety perspective. For lifting road vehicle trailers, alternative devices available in automotive workshops, such as jacks, winches, or cranes, are regularly used. However, such solutions are disadvantageous in terms of both occupational safety and comfort: When suspended by ropes or crane arms, additional safety devices are required to prevent twisting and swiveling movements during work on the road vehicle trailer, so that the mechanic can actually carry out the necessary work. If only jacks are used, it is generally not possible to assume a working position in which upright work is possible; instead, the mechanic must perform the necessary steps in a lying or at least squatting position. Road vehicle trailers are typically dimensioned and customized for their intended purpose. This applies particularly to the length of the trailer, the number of axles, the center of gravity, and/or the design or outline, which can vary considerably depending on the intended use. For example, road vehicle trailers for transporting a motorcycle are significantly shorter and more compact than those designed to transport two cars, a small excavator, or a boat simultaneously. This wide variety of possible designs for a road vehicle trailer requires a high degree of flexibility from a stationary lifting device for lifting a road vehicle trailer, in the sense that the lifting device can be adapted to the dimensions, weight and center of gravity of the trailer to be lifted. TASK OF INVENTION It is therefore an object of the invention to overcome the disadvantages of the prior art and to propose a lifting device which can be adapted as flexibly as possible to various designs of different types of road vehicle trailers. A further objective of the invention is to propose a lifting device that is optimized both with regard to occupational safety and operational safety, as well as with regard to the working posture of a motor vehicle mechanic repairing and/or maintaining the trailer. Furthermore, the invention aims to propose a lifting device that is as compact and space-saving as possible both in the operating state and in the rest state. PRESENTATION OF THE INVENTION This problem is solved by a lifting device according to the invention for lifting a road vehicle trailer comprising a stationary base frame comprising a first upright, a second upright and a drive unit, wherein the two uprights extend along a lifting direction and are spaced apart from each other in a longitudinal direction transverse to the lifting direction, wherein the lifting direction and the longitudinal direction define the lifting The device defines a scaffold plane dividing into a working side and a non-working side, wherein a working direction extends on the working side normal to the scaffold plane, a first and a second lifting element movable by means of the drive unit, wherein the first lifting element is slidably connected to the first upright in the lifting direction and the second lifting element is slidably connected to the second upright in the lifting direction in order to position the lifting elements along the lifting direction by means of the drive unit, as well as a first support arm and a second support arm, which support arms each comprise a fastening section and a support section, wherein the fastening section of the first support arm is preferably detachably connected to the first lifting element and the fastening section of the second support arm is preferably detachably connected to the second lifting element in order to position the support arms in the lifting direction by